<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [snb efi gmux] imac 12,1 blank screen upon booting" href="https://bugs.freedesktop.org/show_bug.cgi?id=59431#c36">Comment # 36</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [snb efi gmux] imac 12,1 blank screen upon booting" href="https://bugs.freedesktop.org/show_bug.cgi?id=59431">bug 59431</a> from <a class="email" href="mailto:seth.forshee@canonical.com" title="Seth Forshee <seth.forshee@canonical.com>"> Seth Forshee</a> <pre>William: Regarding the issue with efifb not working without the patch I supplied, it seems the information efifb requires normally either comes from the bootloader, or else the kernel can discover the information itself if booted using the EFI stub or EFI handover protocol. The failure to work on your system without the quirk could be due to either a bug in the EFI firmware or a problem with how the kernel is being booted. Do you have working graphics in your bootloader? If so the problem is probably with how the kernel is booted. Are you using the standard Ubuntu boot setup (i.e. grub2), and are you modifying it in any way?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>